Cementing-machine.



R. J. BURNS. CEMENTING MACHINE. APPLICATION IILED NOV. 9, 1908.

1,017,507.- Patented Feb.13, 1912.

COLUMBIA PLANOGRAPI! Cu UNITED STATES PATENT OFFICE.-

ROBERT J. BURNS, OF AVON, MASSACHUSETTS, ASSIGNOB TO UNITED SHOE MA- CHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CEMENTING-MACHIN E.

Specification of Letters Patent.

Patented Feb. 13, 1912.

Application filed November 9, 1908 Serial No. 461,696.

To all whom it may concern:

Be it known that 1, ROBERT J. BURNS, a citizen of the United States, residing at Avon, in the county of Plymouth and Commonwealth of Massachusetts, have invented certain Improvements in Cement-ing-Wa- This invention relates to machines for.

applying coating material to stock.

The invent-ion is herein shown as embodied in a machine for applying cement to the bottoms of Goodyear shoes preparatory to laying the outer sole, the cement being employed for the purpose of holding the outer sole temporarily on the shoe and for forming a tight oint between the outer sole and the welt, inseam and filling after the outer sole has been permanently attached by the usual line of stitches. The cement applying means or distributer is commonly a rotary brush, as herein shown, to which the cement is delivered intermittently usually by opening a gate or valve and allowing a desired quantity to flow by gravity.

Hitherto it has been usual to allow the cement to fall upon the distributer at some given point in its width and to employ spreaders to work the cement across the face of the distributer and spread it in a layer of as uniform thickness as possible. Al-

- though various types and combinations of types of spreaders have been employed, the result obtained has not been satisfactory where wide brushes were employed. These distributer s or cement applying means are run at considerable speed and it has been demonstrated that when cement is delivered in such a manner that if undisturbed .it would tend to accumulate entirely on one section or in one locality of the surface of the distributer, the spreaders are inadequate, owing for one reason to the rapidity with which they must act, to work the cement across the surface of the distributer so as to produce a coating of uniform thickness. It seems clear, then, that better results would be obtained by delivering the cement in such a manner that it would be fed directly to all points in the width of the distributer, and one object of my invention is to provide for feeding the cement obliquely in a stream or sheet to the whole width of the distributer whereby a coating of substantially uniform thickness will be immediately applied to the distributer and the necessity for spread ers will cease to exist.

Preferably means are provided for deliverlng the cement in a comparatively thin sheet, the plane of which is approximately perpendicular to the working face of the distributer and extends obliquely across said face; and this means may take the form of 'a slot or elongated opening communicating at its delivery side with the distributer and at lts reverse side with a source of supply of cement. The immediate source of supply may be a receptacle, which is supplied inter-- mittently from a main reservoir, and said receptacle may conveniently be of trapezoidal outline in cross section and'have an inclined bottom, at the lower end of which the obliquely placed delivery means may be situatec.

Although the preferred means for supplying the distributer with cement delivers said cement in a sheet, it is obvious that any means for delivering cement obliquely across the face of the distributerfor example, an ordinary nozzle properly placedwould fall within the scope of this invention.

The obliquity of the cement delivery means is an important feature of this invention since it has been found that, whatever the form of distributer used, better results are obtained by delivering the cement obliquely across its working face. This is particularly noticeable where the distributer takes the form of a brush. In this case the cement delivery means is placed at a slight angle to the rows of bristles so that the individual tufts as they come into operative relation with the cement delivery means take their loads of cement almost but not quite simultaneously and tend thereby to draw the cement from the receptacle in a. sheet of approximately uniform thickness which forms an even coating on the brush. A very satisfactory form of brush is one of the rotary type in which the bristles are set in rows which are oblique to the axis of rotation, this arrangement of bristles having the advantage, among others, that the outline of the brush conforms more nearly to a circle than does that of a brush in which the rows of bristles are arranged parallel with the axis, since in the latter case the intervening spaces tend to give the brush a polygonal outline. And since the outline of the brush is a true circle the hood can be fitted to it with nicety and precision so that all escape of cement except by the desired path will be prevented. \Vith a brush of this kind, as with others, it is advantageous that the cement should be delivered obliquely to the rows of bristles, and attention is directed to the fact that with this form of brush it is possible that the cement delivery means may be parallel to the axis of rotation of the brush. It should, therefore, be understood that the phrase obliquely across the working face of the distributer is intended to cover the construction just referred to and is not limited to the relation which the cement delivery means may bear to the axis of rotation of the brush.

In connection with this oblique delivery means a further object of the invention lies in the provision of means for regulating the thickness of the coating of cement applied, and this means may conveniently be an adjustable gate or regulator which may extend parallel to the cement delivery means, the degree of obliquity of the delivery means and the position of the regulator depending upon the viscosity of the cement and the thickness of the desired coating.

These and other features of the invention including certain details of construction and combinations of parts will be explained in connection with the following description of a machine and will be pointed out more definitely in the claims.

In the accompanying drawings like refer ence characters are used to indicate like parts throughout the several figures in which Figure 1 is a side view of a cementing device, the conduit leading from the reservoir being broken 0H; Fig. 2 is an end view look ing toward the left in Fig. 1 a part of the hood being broken away to show the cement delivery means and the cleaning member, and Fig. 3 is a perspective view of the cement applying means or distributer and its associated parts, the distributer being shown in operative relation to the stock to be coated, and one row of bristles being re moved to show the cleaning member more clearly.

A main casting 1, which is practically a part of the frame of the machine, is provided with a bearing for a shaft 2 and with a hollow arm 3 which is fastened by suitable means as flanges 4 and 5 and screws 6 to a conduit 7 which leads from the cement reservoir. The cement commonly used is a quick drying one having a volatile solvent, such as naphtha for example, and hence it is desirable to deliver the cement only in small quantities as it is needed. For this purpose a lever 8 carrying a chain 9 at one end and an enlargement- 10 at the other is pivoted by a bolt or cap screw to the main casting 1. A spring 11 hooked over projections 12 and 13 on the lever and the casting respectively tends to keep the enlarged end of the lever in its lowest position and hence, as will presently appear, to shut off the flow of cement from the reservior. The bore 141 of the hollow arln 3 terminates a little short of the outer end of said arm, and from the extremity of the bore a passage 15 leads diagonally downward into the receptacle 16. The enlarged end of the lever 8 carries a plate 17 of steel or other suitable material which is ground so as to fit closely over the mouth of the passage 15, the lever 8 forming in effect a valve which is operated against the tension of the spring 11 by means of a treadle or other suitable device to which the chain 9 is connected. A set screw 18 threaded through a lug 011 the main casting and held in adjusted position by a spring 19 regulates the extent to which the valve may be opened and hence the amount of cement which can be delivered in any given time.

The receptacle 16 which may be of trapezoidal outline in horizontal cross section has slots 20 and 21 formed respectively in the opposite non-parallel walls. The slot 20 is adapted to accommodate a screw bolt 22 by which receptacle 16 and its associated parts is adjustably supported, the screw bolt 22 being seated in a socket in the main casting. The opposite slot 21'is adapted to accommodate a set screw 23 which is screwed into a regulating member or gate 24:, the gate being adjustable to the extent of the slot and being held in adjusted position by the screw.

One of the parallel walls of the receptacle is extended to form a disk 25, which conforms to the outline of the distributer. The other parallel wall is extended to form a segmental flange 26 while between the flange and disk extends an approximately semicylindrical member 27. The disk, the flange and the semi-cylindrical member form together a hood which covers substantially the upper part of the distributer, and in the illustrated embodiment of the invention these three parts are shown as integral with each other and with the receptacle, although such a construction is not a necessary one. The hood has been described as of a particular form but it will be understood that this has been done merely because the distributor has been illustrated as of circular outline. One object of the hood is to prevent the escape of cement by any other path than the desired one, and it is evident that the form of the hood may be greatly varied and will depend largely upon the shape of the distributer which it covers.

At one end of the receptacle the floor is raised to form a seat 28 to receive that part of the main casting 1 which receives the screw bolt 22, while the remainder of the floor of the receptacle is formed by the upper side of the semi-cylindrical member 27. Leading from the receptacle is the cement delivery means which may lead from any desired part and be of any desired form, as a nozzle for instance, but which is herein shown as a slot 29 extending through the floor of the receptacle at its lower end and parallel to the wall through which the screw 23 extends. The position of rthe cement delivery means with respect to the receptacle is, however, immaterial so long as its desired posit-ion with relation to the working face of the distributer is obtained. The distributer, which may be of any desired form, is herein shown as a rotary brush which is held in place by the shaft 2, the disk 25, the screw bolt 30 and certain internal parts notshown. It is sufficient for the purposes of this description to state that the brush may be connected to the shaft 2. which is rotated by connecting the pulley 31 to any suitable source of power. In the particular machine illustrated, the bristles of'the brush are set in rows which are oblique to the axis of rotation of the brush, the advantage of this arrangement having been explained above; and the cement delivery means or slot 29 is also oblique to said axis, but the obliquity of these two elements with respect to the axis of rotation is not the same, the rows of bristles being at a slightly different inclination than that of the delivery means. As has been stated the position of the cement delivery means with regard to the axis of the brush is immaterial, and it is quite within the scope of the present invention to arrange the delivery means parallel to the axis, provided only that the rows of bristles are oblique, the only necessary requirement being that the cement shall be delivered obliquely across the working face of the dis tributer. The embodiment illustrated has been chosen because it has been found that a brush of more clearly circular outline can be obtained by setting the rows of bristles at a considerable angle to the axis of the brush, and that by arranging the cement delivery means at a very slightly different angle the best average results are obtained with ordinary cement.

The filling material which is applied. to the insoles of shoes between the inseams is soft when applied and is made in part of particles which are liable to be picked up by the distributer or cement applying means. To prevent such picking up as far as possible the cement applying brush has been constructed of bristles of difierent degrees of coarseness and flexibility. The rows of bristles on the inside, indicated by the numeral 32, are comparatively coarse and stiff so as to work the cement thoroughly into the welt and to dislodge from the welt particles and to clog the flow of cement.

of filler that may have adhered to it. The rows of bristles on the outside, indicated by the numeral 33 are fine and comparatively flexible so as to avoid as far as possible stripping any particles of filler from the soft central portion of the bottom of the shoe. In spite of these precautions, however, a certain amount of filler is picked up by the distributer and unless removed tends to destroy the desirable qualities of the brush To insure the breaking up of any aggregated particles and their removal from the distributer a cleaning means has been provided which preferably takes the form of a tooth or finger or a series of teeth or fingers 34 which in the illustrated form extend well into and among the bristles and form in effect a comb. These teeth are shown as fast to the hood, but the manner of holding them is immaterial so long as they are so held that relative motion between them and the brush is accomplished. And in this connection it should be understood that relative movement is the essential feature and that it is quite within the scope of this invention to employ a stationary distributer and movable cleaning means or to move both the distributer and cleaner but at different speeds.

In operation the regulator 24 having been properly adjusted and power applied to the pulley 31 to cause the distributer to revolve, the chain 9 is given a downward pull. This opens the valve 17 to an extent determined by the position of the set screw 18 and allows a predetermined amount of cement to flow into the receptacle 16. From here the cement is delivered by the cement delivery means 29 obliquely across the Working face of the distributer. As soon as the distributer is properly coated with cement a filled shoe 35 is presented to the under side of the distributer, the edge of the shoe being guided against the rim of the disk 25. In this manner the coarse bristles 32 come into contact with the welt 36 while the line bristles contact with the filled part 37, the distributer revolving as indicated by the arrow in Fig. 3 and being applied to the shoe as there shown. Any particles of filler picked up by the bristles are removed by the teeth or fingers 34 which in the illustrated form are preferably a comb. These teeth are preferably pointed and their distance apart is determined according to the nature of the filling material and the quality .of the cement used, it being evident that if the cement is lumpy or tooviscous the comb will break up the lumps and tend to spread the viscous cement more evenly over the distributer. V

While for convenience the invention has been described as embodied in a machine for applying cement and the coating material has been referred to as cement in the specification and claims it should be understood that the invention is not limited to the application of cement but may be used with any granular, liquid or viscous material.

The invention has been set forth in connection with a specific machine but it should be understood that the machine described is only illustrative, that various changes other than those already suggested may be made and that nothing herein contained is to be construed as limiting this invention and the scope of its application to the specific machine shown and described.

Having thus set forth my invention what I claim as new and desire to secure by Letters Patent is z" 1. In a machine of the class described, the combination of a distributer and means for delivering coating material obliquely across the face of said distributer.

2. In a machine of the class described, the combination of a distributer and means for delivering a sheet of coating material obliquely across the face of said distributer.

3. In a machine of the class described, the combination of a distributer and means for delivering a sheet of coating material to the face of the distributer, the plane of said sheet being oblique to said face.

t. In a machine of the class described, the combination of a distributer, means for delivering coating material obliquely across the face of said distributer and means for regulating the thickness of the coating.

5. In a machine of the class described, the combination of a rotary distributer and means for delivering coating material obliquely across the face of said distributer.

(3. In a machine of the class described, the combination of a rotary distributer and means for delivering a sheet of coating material to the face of the distributer the plane of said sheet being oblique to said face.

7. In a machine of the class described, the combination of a rotary distributer, means for delivering coating material ob liquely across the face of said distributer and means for regulating the thickness of the coating.

8. In a machine of the class described, the combination of a distributer and means extending obliquely across the face of the distributer for delivering coating material to said distributer.

9. In a machine of the class described, the combination of a rotary distributer and means extending obliquely across the face of the distributer for delivering coating material to said distributer.

10. In a machine of the class described,

the combination of a rotary distributer and means extending obliquely across the face of the distributer for delivering a sheet of coating material to said distributer.

11. In a machine of the class described, the combination of a rotary distributer, means extending obliquely across the face of the distributer for delivering coating material to said distributer and means regulating the thickness of the coating.

12. A cementing machine comprising a brush and means for delivering cement obliquely across the face of said brush.

13.- A cementing machine comprising a rotary brush having bristles set in rows which are oblique to the axis of said brush and means for delivering cement obliquely to the rows of bristles.

1 1. A machine of the class described, having, in combination, a distributer provided with a cylindrical Working face, and means for delivering coating material. obliquely across said face.

15. A machine of the class described, having, in combination, a distributer of approximately the form of a cylinder, and means for delivering a sheet of coating material, the plane of said sheet being at an angle to the elements of said cylinder.

16. A machine of the class described, having, in combination, a rotary distributer, and means for delivering to said distributer a sheet of coating material, the plane of which is oblique to the axis of rotation of said distributer.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT J. BURNS.

IVitnesses ARTHUR L. R'UssnLL, FRED. IV. GUIBORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

